Strapping machine with self cleaning feed limit switch...

Details Strapping machine with self cleaning feed limit switch... Strapping machine with self cleaning feed limit switch...

2005-03-29

2005-03-29

Ostrager, Allen (Department: 3725)

Presses

Binding

Binder applying

C100S029000, C100S049000, C100S099000, C053S589000

Reexamination Certificate

active

06871584

ABSTRACT:
A self-cleaning limit switch is for use in a strapping machine of the type configured to convey strapping material around a load, receive first and second courses of the strapping material, position, tension and seal the strapping material around a load. The strapping machine includes a strapping head having internal and external limit switch channels formed therein. The limit switch includes a sliding element having internal and external sliding portions rigidly connected to one another. The internal sliding portion is positioned in the strapping head internal limit switch channel and the external portion is positioned in the strapping head external limit switch channel. The internal and external sliding portions include an inclined surface at a rearward end thereof and upstanding walls at a forward end thereof. The internal sliding portion has a lip for engaging the second course of strapping material. The external sliding portion includes a position indicating element thereon. The sliding element is movable between a strap not present position when the second course of strapping material is not present at the limit switch, and a strap present position when the second course of strapping material is present at the limit switch. Movement of the sliding portions dislodges debris that is present in the strapping head internal and external channels. A strapping machine having a strapping head with the self cleaning limit switch is also disclosed.

REFERENCES:
patent: 5267508 (1993-12-01), Yoshino
patent: 5513482 (1996-05-01), Nagashima et al.
patent: 6637324 (2003-10-01), Stamps

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